Studying the Effect of Non-Thermal Plasma on the Structure, Optical, and Humidity Sensor Properties of Cr:Se Thin Films
Over the past few years, there has been a significant focus on studying the synthesis and applications of metal nanoparticles. These tiny particles possess distinct properties that set them apart from bulk metals. The liquid for Cr:Se core-shell nanoparticles was made using the plasma jets method a...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Baghdad
2025-06-01
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| Series: | Iraqi Journal of Physics |
| Subjects: | |
| Online Access: | https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/1340 |
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| Summary: | Over the past few years, there has been a significant focus on studying the synthesis and applications of metal nanoparticles. These tiny particles possess distinct properties that set them apart from bulk metals. The liquid for Cr:Se core-shell nanoparticles was made using the plasma jets method and turned into thin films that are 158.9 nm thick through chemical spray pyrolysis. The nanothin films were analyzed using X-ray diffraction (XRD), ultraviolet-visible spectroscopy, and transmission electron microscopy (TEM). This study looks at the structure and light properties of core-shell nanoparticles made with a chromium to selenium (Cr:Se) ratio of 6:4. The XRD patterns confirmed the crystalline nature of the nanoparticles for the polycrystalline ratio (6:4). When the best thin film, which is well-crystallized, is exposed to non-thermal plasma (dielectric barrier discharges (DBD)), the XRD shows important changes, suggesting it is becoming more crystalline. Tauc plots show that the direct bandgap energies change in a non-linear way, with a notable increase in energy from 2.77 to 3.88 eV. Transmission electron microscopy analysis highlights improved nanoparticle distribution and uniformity. These findings point out the importance of Cr:Se nanoparticles for advanced optoelectronic and sensing technologies, as well as various technological applications.
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| ISSN: | 2070-4003 2664-5548 |